Crushing machine



Sept. 23, '1930. E. B. sYMoNs Y 1,776,454

I cRUsHING MACHINE Fged oct. 8, 192e 2 sheets-sheet 1- @Kw4-m' Sept. 23, 1930.

E. B. sYMoNs CRUSHING .MACHINE 2 Sheets-Sheetl 2 Imi/6752507" Filed 'Dot 8. 1928 jaar ,@2720726 ttorzkeg,

Patented Sept. 2 3, 19,30

A UNITED STATES PATENT OFFICE EDGAR B. SYMONS, 0F LOS ANGELES, CALIFORNIA, ASSIGNOIR. T0 NOBDBERG MANU- FACTURING COMPANY, or coNsIN j .MILWAUKEE WISCONSIN', .A CORPORATION 0F 'WIS- CRUSHIN G MACHINE Application led October 8, 1928. Serial No. 310,988.

My invention relates to a crushing device and particularly to a crushing device 1n which a cone is gyrated within the normally fixed concave or bowl. One object of my u invention is to provide a liner for such con-- cave or bowl, which shall bequickly and rmly securable in position. Another object is to provide such a, liner which shall minimize thetendencyof large, hard rocks or fragments to be pinchedl upwardly out of the crushing zone in responseto movement oi cone against bowl. Another object is the provision of such a liner, and securing means therefor,

such securing means being protected from external wear and being remote from the line of passage of the material being crushed.'

Other objects will appear from time to time in the course of the specification and claims.

I illustrate my invention more-or less dii agrammatically in the accompanying drawings, wherein- Figure 1 is a vertical section; Figure ,2 is a section on the line 2-2 of Figuref'i and Figure 1'.' a

Like parts are indicated by like symbols throughout the specification and drawings. A generally indicates a crusher shaft, the means for gyrating such shaft being not herein shown and forming-,no part, of themselves, of the present invention. It will be understood that any suitable driving and gyrating means may be employed, asshown for example in my No. 220,471, filed on the 19th day of September, 1927 A1 indicates the crushinghead or 'and that the bolts serve to holdthe collar Figure 3 is a section on the line 3 3 ofv co-pending application cone mounted on the sha-ft A in any suitablev base portion B1 which may be secured as by` the bolts B2 to any suitable support or supports B3.

Mounted upon the upper edge B4 of the member Bis the supporting ring C which -1S normally held fixed in relation to the member B, as by the coil springs C1, bolts C2 and the annular collar C3. It will be understood that the springs are aligned by the bolts C1 C3 at the desired level, the springs being compressed between the lower face of the member B4 and the collar.

rlhe member C includes the screwthreaded portion C5 in mesh with similar threads C7 on the cylindrical -member C8. Herein shown as integral with the member C8 is the upwardly and inwardly inclined bowl or concave C9 which is provided with a plurality of apertures C10. C11 C indicate webs, adja- 70 cent said apertures, and connected* to the members C8 C".

'D generally indicates the crushing liner for said bowl or concave. It includes a lower closest approach, equi-distant from he opposed face of the cone. D2 is an intermediate portion of the liner which inclines or ares. away from the opposed face of the cone. Thel upper portion of the liner'is occupied by a plurality of steps or ridges D3.- Each such ridge includes a relatively extended face D* and a shorter face D".

The faces D* are inclined from the opposed face of the coneat angles somewhat less than the angle of the upper portion of the liner takenv as a whole. The purpose of this constructionV is to permit the use of a crushing opening flared upwardly and outwardly at a suiicient-angle, and suiciently spaced om the opposed portion of the cone, to receive relatively large rocks or -fragments for reduction. Where a'wide angle is employed and where the opposed faces 'of cone and bowl are smooth thereis with some substances, as for example boulders mixed with clay, a tendency tor rocks orbou1ders,particularly if of rounded contour, to be pinched upwardly out of the crushing space. In other words, when thecone approaches the bowl the rock, instead of 10 being reduced, may be pinched or sprung upwardly out of the crushing zone. I find that the employment of circumferential led es or ridges or steps, for example as herein s own, much reduce or even eliminate this tendency.

In order to secure the liner upon the bowl I provide a plurality 4of holding lugs D, herein shown as hook-shaped, whlch roject inwardly through the apertures 1. Each such lug may be aligned between two of the webs C1?, as shown in Figures 2 and 3. For

of the web C11 are inclined downwardly and inwardly toward the axis of the cone, whereby the line of tension exerted by the U-bolts inclines inwardly toward the axis of the cone. f

It will be realized that whereas I have described and shown a practical and operative device, nevertheless many changes may be made in the size, shape, number, relation and disposition of parts without departing from the spirit of my invention.` I therefore wish my drawings to be taken as in a broad sense illustrative and diagrammatic rather than as limiting me to my specific showing.

The use and operation of my invention are as follows:

In crushers of the type herein shown, as described and claimed for example in my prior Patents,No. 1,537,564 and No. 1,537 ,565,

oth issued on May 12, 1925, a cone is gyrated within a normally iixedf bowl, theg spring release of which forms no part per se of the present application. Since the stroke or throw of the cone is very great, as compared to prior practice,the liner is Sub-4 cted to a heavy pounding action, and satisactory securing means therefore must be provided. I Iind it preferable to conceal or protect the securing means and to hold them out of the line of movement of the material undergoing crushing. Hence I have apertured the bowl, to permitthe passage throu'gh such apertures of securing lugs, or to permit the penetration vthrough said apertures of securing means whereby the liner is held in position without the employment of any exposed securing members. Whereas I have described 'and shown the employment of hook-shaped lugs in connection with U-bolts, 1t will be understood that a wide variety of lsecuring members lmay be employed and that.

I 'do not wish to be limited to the specific form or forms herein shownaexcept so far as I limit myself specifically by the language of the claims.

In this type of crusher a very large reduction is effected at one operation and I therefore find it desirable to have a very wide opening or flare at the top of the crushing zone, in connection with a very close setting or close approach of cone to bowl at the lower portion of the cone.

When relatively large pieces are fed to the Crusher, and particularly when such pieces are rounded or are wet and slippery, as is the case when boulders mixed with clay are being crushed, there-is a tendency, in earlier crushers of this type, for such boulders to be pinched or squeezed out of the crushing zone.

n such case they may pop up out of the top of the crushing zone, when nipped between cone and bowl, without being crushed or reduced. In order to prevent this action I have formed the upper face of the liner of the bowl with a series lof steps or with a series of annular .projections or channels. Each such Step D* is of suliicient area or width to grip the large boulder between itself and the cone and is at such an angle that the boulders when so gripped will not be squeezed or pinched upwardly out of the crushing zone. Were the entire face of the bowl formed at a similar angle, the upper portion of the crushing zone would be needlessly restricted,- and would be made so small, in fact, as to reduce the size of piece which could be taken,

and therefore the extent of reduction which can take place at one step. However, by widely flaring the bowl and liner and by fbrming the upper face of the liner with a series of steps or channels, I obtain the advantageous eiect of a smaller angle between bowl and cone, while retaining the advantage of a wide flare or opening at the upper portion of the crushingzone.

I claim:

1. In a crushing machine which includes a cone, a bowl about said cone, and means for imparting a gyratory movement to said cone,

said bowl includin an outer generally cylindrical portion and` an inner inverted bowl portion associated therewith, a liner for said bowl and securing means for said liner, positioned in the space between said outer cylindrical portion of the bowl and said inner bowl portion, including lugs on said liner adapted to extend into the space between the cylindrical'portion and the owl portion, the bowl being apertured in line therewith and securing membersl positioned between the cylindrica portion and the bowl portion adapted to engagesaid lugs and means for exerting tension thereon.

2. In a crushing machine which includes al cone, a bowl about said cone, and means for 3. In a crushing machine which includes a cone, a bowl about said cone, and means for impart-ing a gyratory movement tosaid cone, said bowl including an outer generally cylindrical portionV and an inner inverted bowl portion associated therewith, a liner for said bowl, and securing means for said liner, positioned in the space-between said outer cylindrical portion of the bowl and said inner bowl portion, including lugs on said liner, the bowl portion being apertured in line therewith, and securing bolts adapted to engage said lugsand abutments for said bolts, in the space between the cylindrical portion andthe bowl portion.

4. In a crushing machine which includes a cone, a bowl about said cone, and means for imparting a gyratory movement to said cone, said bowl including an outer generally cylindrical portion and an inner inverted owlv portion associated therewith, a liner for said bowl and securingmeans for said liner, positioned in the space between said outer cylindrical portion of the bowl and said inner bowl portion, including hook lugs on said l liner, the bowl portion being a rtured in line therewith, and U-bolts adapte to engage said lugs and abutments for said U-bolts, in the space between the cylindrical portion and the bowl portion.

5. 4In a crushing machine which includes a cone, a bowl about said cone, and means for /imparting a gyratory movement to said cone, said bowl including an outer generally cylinlugs, and abutment webs for said bolts, in the space between the cylindrical portion and the bowl portion, the upper edges of said webs being downwardly and inwardly inclined toward the cone.

7 In combination with a crushing machine which includes a cone and means for im arting a gyratory movement thereto and a owl member positioned about said cone, said bowl member including an inner inverted bowl portion and an outer and generally cylindrical portion, the two being connected at their lower edges, a liner for said inverted bowl portion, and securing means for said liner including lugs extending from the outer face of said liner intermediate top and bottom thereof, the inverted ybowl portion being apers tured to permit the penetration therethrough of said lugs, said lugs lying within the peripheries `of the apertures through which they pass and being adapted to permit un- -impeded vertical movement of the liner downwardly away vfrom the face of the inverted bowl portion.

Signed at Chicago, county of Cook, and State of Illinois, this 29th day of September,

EDGAR B. sYMoNs.

los

drical portion and an inner inverted bowl portion assoeiated therewith, a liner for said bowl and securing means for said liner, positioned in the space between said outer cylindrical portion of the bowl and said inner bowl portion, including lugs on said lin'er,

the bowl portion being apertured in 'line' i therewith, and securing bolts ada ted to engage said lugs, and abutment we s for said o ts, in the space between the cylindrical portion and the bowl portion. i 6. In a crushing machine which includes cone, a bowl about said cone, and means for imparting a gyratory movement to said cone,

said bowl including an outer generally lin-v drical portion an 'an inner inverted portion associated therewith, a liner for said bowl and securing means for said liner, positioned in the space between said outer cylindrical portion of the bowland said inner bowl portion, including lugs on said liner, the bowl portion being a rtured in line therewith and securing b ts adapted to engage said 

